公开(公告)号：US12073123B2

公开(公告)日：2024-08-27

申请号：US17963077

申请日：2022-10-10

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F12/00 ,  G06F3/06

CPC classification number: G06F3/0661 ,  G06F3/0608 ,  G06F3/064 ,  G06F3/0673

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory. In this way, the block numbers are read from memory is faster than loading the block numbers from disk.

公开(公告)号：US20200310697A1

公开(公告)日：2020-10-01

申请号：US16365956

申请日：2019-03-27

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F3/06

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory. This improves the processing of access operations because reading the block numbers from memory is faster than loading the block numbers from disk.

公开(公告)号：US10852994B2

公开(公告)日：2020-12-01

申请号：US16365956

申请日：2019-03-27

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F12/00 ,  G06F3/06

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory.

公开(公告)号：US10324652B2

公开(公告)日：2019-06-18

申请号：US15631296

申请日：2017-06-23

Applicant: NetApp, Inc.

Inventor： Venkata Vijay Chaitanya Challapalli ,  Ravi Lingappa Shamanna ,  Kumaran Nagappan ,  Santhosh Selvaraj

IPC: G06F3/06 ,  G06F11/20

Abstract: Methods, non-transitory computer readable media, and computing devices that facilitate copy-free data migrations across filesystems. In a first step with this technology, a first set of filesystem metadata associated with a first filesystem is received. At least a portion of the first set of filesystem metadata is retrieved from a first data structure associated with the first filesystem. The first set of filesystem metadata includes a first identifier and a physical location associated with user data. A second identifier, associated with a second filesystem having a different addressing scheme than the first filesystem, is generated from at least the first identifier. A second set of filesystem metadata including the second identifier and the physical location is stored such that at least the second identifier is stored in a second data structure associated with the second filesystem.

公开(公告)号：US11467774B2

公开(公告)日：2022-10-11

申请号：US17083945

申请日：2020-10-29

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F12/00 ,  G06F3/06

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object.

公开(公告)号：US20180373457A1

公开(公告)日：2018-12-27

申请号：US15631296

申请日：2017-06-23

Applicant: NetApp, Inc.

Inventor： Venkata Vijay Chaitanya Challapalli ,  Ravi Lingappa Shamanna ,  Kumaran Nagappan ,  Santhosh Selvaraj

IPC: G06F3/06

Abstract: Methods, non-transitory computer readable media, and computing devices that facilitate copy-free data migrations across filesystems. In a first step with this technology, a first set of filesystem metadata associated with a first filesystem is received. At least a portion of the first set of filesystem metadata is retrieved from a first data structure associated with the first filesystem. The first set of filesystem metadata includes a first identifier and a physical location associated with user data. A second identifier, associated with a second filesystem having a different addressing scheme than the first filesystem, is generated from at least the first identifier. A second set of filesystem metadata including the second identifier and the physical location is stored such that at least the second identifier is stored in a second data structure associated with the second filesystem.

公开(公告)号：US20230176791A1

公开(公告)日：2023-06-08

申请号：US17963077

申请日：2022-10-10

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F3/06

CPC classification number: G06F3/0661 ,  G06F3/064 ,  G06F3/0673 ,  G06F3/0608

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory. This improves the processing of access operations because reading the block numbers from memory is faster than loading the block numbers from disk.

公开(公告)号：US20210042061A1

公开(公告)日：2021-02-11

申请号：US17083945

申请日：2020-10-29

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Kumaran Nagappan ,  Sriram Venketaraman ,  Szu-Wen Kuo ,  Yong Eun Cho

IPC: G06F3/06

Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory. This improves the processing of access operations because reading the block numbers from memory is faster than loading the block numbers from disk.